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                [Wf2015]Keyboarding                </h1>
                <p>时间限制：8s&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  空间限制：128MB</p>			</div>
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                                <h3>题目描述</h3><p><div>给定一个r行c列的在屏幕上的&ldquo;虚拟键盘&rdquo;，我们需要通过&ldquo;上，下，左，右，选择&rdquo;5个控制键来移动屏幕上的光标来打印文本。一开始，光标在键盘的左上角，每次按方向键，光标总是跳到下一个在该方向上与当前位置不同的字符，若不存在则不移动。每次按选择键，则将光标所在位置的字符打印出来。</div>
<div>现在求打印给定文本（要在结尾打印换行符）的最少按键次数。</div>
<div></div></p><hr/><h3>输入格式</h3><p><p>第一行输入r,c(1&le;r,c&le;50)</p>
<div>接下来给出一个r*c的键盘，包括大写字母，数字，横线以及星号（星号代表Enter换行）</div>
<div>最后一行是要打印的文本串s，s的长度不超过10000.</div></p><hr/><h3>输出格式</h3><p><p>输出打印文本（包括结尾换行符）的最少按键次数。保证一定有解。</p></p><hr/><h3>样例输入</h3><pre>2 19
ABCDEFGHIJKLMNOPQZY
X*****************Y
AZAZ
</pre><hr/><h3>样例输出</h3><pre>19</pre><hr/><h3>提示</h3><p><p></p>
<p></p>
<p></p>
<p></p>
<p>附其余三个样例</p>
<p>Sample Input 1</p>
<p>4 7</p>
<p>ABCDEFG</p>
<p>HIJKLMN</p>
<p>OPQRSTU</p>
<p>VWXYZ**</p>
<p>CONTEST</p>
<p>Sample Output 1</p>
<p>30</p>
<p></p>
<p>Sample Input 2</p>
<p>5 20</p>
<p>12233445566778899000</p>
<p>QQWWEERRTTYYUUIIOOPP</p>
<p>-AASSDDFFGGHHJJKKLL*</p>
<p>--ZZXXCCVVBBNNMM--**</p>
<p>--------------------</p>
<p>ACM-ICPC-WORLD-FINALS-2015</p>
<p>Sample Output 2</p>
<p>160</p>
<p></p>
<p>Sample Input 3</p>
<p>6 4</p>
<p>AXYB</p>
<p>BBBB</p>
<p>KLMB</p>
<p>OPQB</p>
<p>DEFB</p>
<p>GHI*</p>
<p>AB</p>
<p>Sample Output 3</p>
<p>7</p>
<p></p></p><hr/><h3>题目来源</h3><p>鸣谢phile提供译文</p>
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